Hydraulic motor



(No Model.)

.3 Sheets'-Shet 1. J. A. YERS.- HYDRAULIC MOTOR.'

No. 400,411. Patented Mar. 26, 1889.

In TJE 212 571":

(No maul.

3 Sheets-Sheet 3. J. A- 'MYERSi I HYDRAULIC MOTOR.

' No. 4'00',411.- Patented Many-26, .1889.

UNITED STATES PATENT OFFICE.

JOHN A. MYERS, or LOUISVILLE, KENTUCKY.

HYDRAULIC MOTOR.

SPECIFICATION forming part of Letters Patent No. 400,411, dated March 26, 1889.

Application filed August 28, 1888. Serial No. 283,973. (No model.)

To all whom it may concern:

Be it known that 1, JOHN A. MYERS, of Louisville, in the county of Jefferson and State of Kentucky, have invented certain new and useful Improvements in Hydraulic Motors; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use it, reference being had to the accompanying drawings, which form part of this specification.

My invention relates to an improvement in hydraulic motors; and itconsists in, first, the combination of the cylinder, the casting which forms the valve-seats, the valve-carriage, the valves connected to and moving with the carriage, the rod which is operated by the piston, and the spring which is placed inside of the valve-carriage second, the combination of the oscillating cylinder mounted upon a suitable support, a casting placed in one end of the cylinder and provided with passages for the water and corresponding valve-seats, a reciprocating valve-carriage to which the four valves are secured, the piston, and a connecting-rod which extends through the valve-carriage and into the piston-rod for the purpose of moving the carriage and the valves; third, the arrangement and combination of parts, which will be more fully described hereinafter.

The objects of my invention are to secure the casting which has the valve-seats formed therein rigidly in position in the cylinder, and to attach the valves to a spring-actuated valve-carriage which is moved in one direction by the piston-rod and in the other direction by an intermediate connecting-rod.

Figure 1 is a side elevation of a motor which embodies my invention complete. Fig. 2 is a longitudinal section of the same. I Fig. 3 is a plan view of a stationary casting in which the valves are placed. Fig. 4. is a horizontal section of the same.

A represents the horizontal support to which the cylinder is secured; B, the bearin gs which are secured to this support and between which the cylinder 0 is pivoted; D, the operating-lever, and E the piston-rod, which is connected at its outer end to the lever D for the purpose of reciprocating it, at the same time that the cylinder has an oscillating movement in its bearings B.

Secured to the lower edge of the support A is a box or bearing, F, through which a pivot, G",passes, and upon this pivot G the upper end of the lever D is journaled. This lever D is bifurcated at its upper end, so as to catch upon opposite sides of this box or bearing F and through this bifurcated portion passes the second pivot K, to which the end of the piston-rod E is fastened. The cylinder 0 is provided with the inlet F and the outlet G, and connected to the outlet G, beyond the side of the cylinder, is a tube, H, which carries ofl: the leakage from the box I, made to catch it.

The piston-rod E is connected at its outer end to the head J, which has a transverse opening through its outer end for the pivot K to pass through and make connection with the operating-lever D. To the inner end of the piston-rod E is secured the piston L, which may be of any suitable construction and secured to the piston in any suitable manner, and held in position by means of the nut M.

The cylinder 0 is provided with two screwheads, N N. Upon the outer side of the head N is formed the screw-threaded projection O, which is provided with one thread to receive the box I, which catches any leakage of water, and a second one to receive a cap, P, which forms a stuffing-box to prevent any leakage. All of the water which leaks into the box I passes off through the pipe H into the discharge.

In order to prevent any leakage from the box I, it is provided with a screw-thread upon its outer end, and upon this screw-thread is screwed the cap Q, which forms a stuffing-box to prevent any leakage at this point. The box I and the two caps P Q prevent any possibility of a leakage taking place where ordinary care is observed. Should the packing inside of the cap become loose, it is only necessary to unscrew the box I and force it upward along the piston-rod, and then tighten up upon the cap P. The chambers R and S in opposite ends of the cylinder are connected together by the pipe T, so that when the piston L is forced upward the water contained in the chamber R can be forced through this pipe T into the chamber S, and thence through the outlet-pipe G.

The inner end of the piston-rod E contains a cavity, U, and extending into this cavity is the rod V, which has the head \V formed upon that end which extends into the cavity, and which is prevented from coming out by means of the nut X,which extends asuitable distance on beyond the end of the piston for the purpose of passing through the valve-carriage Y, which has the opening Z through its center. This valve-carriage Y is made T- shaped, and has its tubular part A to extend through the casting B, in which are formed the valve-seats, and which is placed inside of the cylinder 0. That portion A of the valve-carriage Y is made hollow, and in side of it is placed the two bearings C, the lower one of which is held in place by the nut D. Between the two bearings C is placed a spring, E, and extending through the two bearings G and spring E is the rod V, which has the two nuts F G placed upon its lower end,the nut F being made to strike against the lower bearing,C, for the purpose of compressing the spring E. The opening through the nut D is suificiently large to allow the nuts F G to play back and forth through it into the recess H in the cylinder-head N. The inner bearing, C, rests against the shoulder at the inner end of the tubular portion A and the valve-carriage Y, and the spring E is compressed, when the inward movement of the piston L forces the nut X through the opening Z, so that the end of the nut strikes against the bearing C for that purpose. \Vhen the piston is forced outward, the head \V upon the rod V strikes against the end of the nut X, and then the nuts F G are made to strike against the other bearing, 0, and thus compress the spring from the opposite end. The valveseat B remains stationary in the cylinder, being packed tightly therein, and is divided by a vertical partition, 1, into a receivingchamber, J, and a discharge-chamber, K. This valve-chamber is held from any endwise movement in the cylinder by the heads of the bolts L, which secure the trunnions to the side of the cylinder, and which extend through the side of the cylinder, as shown, in one direction, and by bearing against the cylinder-head N in the other direction. The valve-carriage Y is always guided in its movements by a pin or projection, ill, which extends up above the top of the valve-seat, and passes through a wing, l l, upon the carriage itself, as shown in Fig. 3.

Leading from the inlet-chamber J is an outlet, T, through which the water passes into the chamber P, between the piston L and the valve-carriage Y, and leading from this chamber P is a second passage, U, through which the water passes into the discharge-chamber K in the outer end of the cylinder. In this inlet-chamber J is placed a double-acting valve, R, which is secured to the valve-stem S, which extends through the opening T and through the valve-carriage Y, to which it is rigidly secured by means of the sleeve T which is placed upon the valve-rod S and the nuts U. The sleeve T holds the valve tightly against the heads of the valve-rod S, and the nuts U secure the valve-rod rigidly to the valve-carriage Y. The movement back and forth of the valvecarriage Y causes the valve R to alternately close the openings T Q, according to the direction in which the piston L is moved. The water which is admitted from the pipe E into this inlet-chamber J cannot have access to the discharge chamber K except after it has passed through one of the outlets T Q and through the chamber P or S. The outlet-chamber K is also provided with two inlets, U V, and these inlets are alternately closed by the valves V. X, secured to the valve-rod Z, which is secured rigidly to the valve-carriage. The valve W is rigidly held between a shoulder upon the rod Z and the side of the valve-carriage Y, while the valve X is held between a second shoulder 011 the rod Z and suitable clamping-n uts. Through the sides of the valve-chamber B are made suitable openings, as shown, so that the water can pass freely to and from the pipes F and G.

The operation of my invention is as follows: The water enters the inlet-chamber J through the pipe F, and passes through the passage T into the chamber P and forces the biston L outward. \Vhen this piston has moved far enough to bring the inner end of the nut X against the head XV of the rod D, the continued movement of the piston causes the nut F to move the bearing C so as to compress the spring E, so as to cause the spring to exert its power upon the valve-carriage Y, which carriage gives away under the pressure of the spring at the moment when the spring-pressure becomes about equal to the water-pressure as it bears against the valves R \V and instantly moves the whole valve-carriage Y toward the piston, thus opening the outletports Q and inlet U, and closes by the movement of the valves the outlet T and inlet V, the outlet T closed by the movement of the valve R, which at the same time opens the outlet-passage Q and closes the inlet-passage V by the movement of valve X at the same time that the valve \V moves away from the passage U. The water which was contained in the chamber R of the cylinder is forced by the movement of the piston through the pipe T into the chamber S at the opposite end of the cylinder, from which chamber S it passes through the inlet passage V into the discharge-chamber K, from which it escapes through the pipe G. The valves having been reversed, the action of the water is also reversed. The water now passes from the inlet-chamber J to the passage Q into the chamber S, and from this chamber through the pipe Tin to the chamber R, where the pressure of the through the pipe G.

Having thus described my invention, I claim- 1. The combination of the oscillating cylinder, a stationary casting which is placed therein and provided with four openings and corresponding valve-seats, a reciprocatingvalve carriage to which all of the valves are connected, the piston, and a rod which connects the valve-carriage and piston together and operates the valve-carriage, substantially as described.

2. The combination of the oscillating cylinder, the piston, the stationary casting provided with the inlet and outlet openings and receiving and discharge chambers, the reciprocating-valve carriage, the valves secured to and operated by the carriage, and a connecting-rod which loosely connects the piston and the valve-carriage together, one end of the rod being made to extend into an opening in the piston-rod and the other end to. extend through the valve-carriage, and provided with a head or stop upon each of its ends, substantially as set forth.

- 3. The combination of the oscillating cylinder, the stationary casting placed therein and provided with inlet and outlet openings and the inlet and outlet chambers, the pipes connected to the chambers, the valve-carriage, the valve secured thereto, the piston,

' the pipe which connectsthe two ends of the cylinder together, and the spring-actuated rod for connecting the valve-carriage and the piston together, substantially as shown.

4. The combination of the oscillating cylinder, the pipe T, for connecting its two ends together, the piston, the casting provided with inlet and outlet openings and inlet and outlet chambers, the pipes connected to the two chambers, the valve-carriage, the valve secured thereto, the endwise-Inoving rod for connecting the piston and valve-carriage to- V gether, and which is provided with a stop upon each of its ends, the bearings G, placed inside of the carriage, and the spring placed between the openings and the nut D, substantially as described.

5. The combination of the cylinder, the piston-rod provided with an opening in its end,

the projection X, the rod V, the casting in which the water-passages, the valve-seats, and the supply and escape chambers are formed, the valve-carriage, the valves secured thereto, a spring placed inside of the carriage, and the ends of the rod V being provided with stops, substantially as described.

6. The combination of the cylinder, the casting provided with water-passages, valveseats, and a delivery and escape chamber, the valve-carriage, the valves secured to the carriage, the springs placed inside of the carriage, the bearings for the ends of the springs, the rod V, which extends through the carriage, the extension connected to the end of the piston-rod, the rod which is provided with stops upon its ends, and the piston, substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN A. MYERS. \Vitnesses:

JOHN BOWEN, JOHN BURKHARDT. 

